<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
        </el-breadcrumb>
        <el-card>
            <el-row>
                <el-col>
                    <el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
                </el-col>
            </el-row>
            <el-table :data="rolesList" border stripe>
                <el-table-column type="expand">
                    <template slot-scope="scope">
                        <el-row :class="['bdbottom', i1 ===0 ? 'bdtop' : '', 'center']" v-for="(item1, i1) in scope.row.children" :key="item1.id">
                            <el-col :span="5">
                                <el-tag closable @close="removeRightsById(scope.row, item1.id)">{{item1.authName}}</el-tag>
                                <i class="el-icon-caret-right"></i>
                            </el-col>
                            <el-col :span="19">
                                <el-row :class="[i2 === 0 ? '' : 'bdtop', 'center']" v-for="(item2, i2) in item1.children" :key="item2.id">
                                    <el-col :span="6">
                                        <el-tag type="success" closable @close="removeRightsById(scope.row, item2.id)">{{item2.authName}}</el-tag>
                                        <i class="el-icon-caret-right"></i>
                                    </el-col>
                                    <el-col :span="18">
                                        <el-tag type="warning" v-for="item3 in item2.children" :key="item3.id" closable 
                                            @close="removeRightsById(scope.row, item3.id)">
                                            {{item3.authName}}
                                        </el-tag>
                                    </el-col>
                                </el-row>
                            </el-col>
                        </el-row>
                    </template>
                </el-table-column>
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column label="角色名称" prop="roleName"></el-table-column>
                <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
                <el-table-column label="操作" width="300px">
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)">编辑</el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="showDeleteDialog(scope.row.id)">删除</el-button>
                        <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightsDialog(scope.row)">分配权限</el-button>
                    </template>
                </el-table-column>
            </el-table>
        </el-card>
        <el-dialog title="添加角色" :visible.sync="addDialogVisible" width="50%" @close="addDialogClose">
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="80px">
                <el-form-item label="角色名称" prop="roleName">
                    <el-input v-model="addForm.roleName"></el-input>
                </el-form-item>
                <el-form-item label="角色描述" prop="roleDesc">
                    <el-input v-model="addForm.roleDesc"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addRole">确 定</el-button>
            </span>
        </el-dialog>
        <el-dialog title="修改角色信息" :visible.sync="editDialogVisible" width="50%" @close="editDialogClose">
            <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="80px">
                <el-form-item label="角色名称" prop="roleName">
                    <el-input v-model="editForm.roleName" disabled></el-input>
                </el-form-item>
                <el-form-item label="角色描述" prop="roleDesc">
                    <el-input v-model="editForm.roleDesc"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editRole">确 定</el-button>
            </span>
        </el-dialog>
        <el-dialog title="分配权限" :visible.sync="setRightsDialogVisible" width="50%" @close="setRightsDialogClose">
            <el-tree :data="rightsList" :props="treeProps" show-checkbox node-key="id" default-expand-all 
                :default-checked-keys="defKeys" ref="treeRef"></el-tree>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRightsDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="allotRights">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data() {
        return {
            rolesList: [],
            addDialogVisible: false,
            addForm: {},
            addFormRules: {
                roleName: [
                    { required: true, message: '请输入角色名称', trigger: 'blur' },
                    { min: 3, max: 10, message: '用户名的长度在3-10个字符之间', trigger: 'blur' }
                ],
                roleDesc: [
                    { required: true, message: '请输入角色描述', trigger: 'blur' },
                    { min: 1, max: 30, message: '角色描述的长度在1-30个字符之间', trigger: 'blur' }
                ]
            },
            editDialogVisible: false,
            editForm: {},
            editFormRules: {
                roleDesc: [
                    { required: true, message: '请输入角色描述', trigger: 'blur' },
                    { min: 0, max: 30, message: '角色描述的长度在0-30个字符之间', trigger: 'blur' }
                ]
            },
            setRightsDialogVisible: false,
            rightsList: [],
            treeProps: {
                label: 'authName',
                children: 'children'
            },
            defKeys: [],
            roleId: ''
        }
    },
    created() {
        this.getRolesList()
    },
    methods: {
        async getRolesList() {
            const { data: res } = await this.$http.get('roles')
            if(res.meta.status !== 200) return this.$message.error('获取角色列表失败')
            this.rolesList = res.data
        },
        addDialogClose() {
            this.$refs.addFormRef.resetFields()
        },
        addRole() {
              this.$refs.addFormRef.validate(async valid => {
                if(!valid) return
                const { data: res } = await this.$http.post('roles', this.addForm)
                if(res.meta.status !== 201) {
                    this.$message.error('添加角色失败')
                }
                this.$message.success('添加角色成功')
                this.addDialogVisible = false
                this.getRolesList()
            })
        },
        editDialogClose() {
            this.$refs.editFormRef.resetFields()
        },
        async showEditDialog(id) {
            this.editDialogVisible = true
            const { data: res } = await this.$http.get('roles/' + id)
            if(res.meta.status !== 200) {
                return this.$message.error('查询角色信息失败')
            }
            this.editForm = res.data
            this.editDialogVisible = true
        },
        editRole() {
            this.$refs.editFormRef.validate(async valid => {
                if(!valid) return
                const { data: res } = await this.$http.put('roles/' + this.editForm.roleId, {
                    roleName: this.editForm.roleName, roleDesc: this.editForm.roleDesc
                })
                if(res.meta.status !== 200) {
                    return this.$message.error('更新角色信息失败')
                }
                this.editDialogVisible = false
                this.getRolesList()
                this.$message.success('更新角色信息成功')
                console.log(this.editForm)
            })
        },
        async showDeleteDialog(id) {
            const confirmResult = await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)
            if(confirmResult !== 'confirm') {
                return this.$message.info('已取消删除')
            }
            const { data: res } = await this.$http.delete('roles/' + id)
            if(res.meta.status !== 200) {
                return this.$message.error('删除角色信息失败')
            }
            this.getRolesList()
            this.$message.success('删除角色信息成功')
        },
        async removeRightsById(role, rightsId) {
            const confirmResult = await this.$confirm('此操作将永久删除该权限, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)
            if(confirmResult !== 'confirm') {
                return this.$message.info('已取消删除')
            }
            const { data: res } = await this.$http.delete(`roles/${role.id}/rights/${rightsId}`)
            if(res.meta.status !== 200) {
                return this.$message.error('删除权限失败')
            }
            role.children = res.data
            this.$message.success('删除权限成功')
        },
        async showSetRightsDialog(role) {
            this.roleId = role.id
            const { data: res } = await this.$http.get('rights/tree')
            if(res.meta.status !== 200) {
                return this.$message.error('获取权限数据失败')
            }
            this.rightsList = res.data
            this.getLeafKeys(role, this.defKeys)
            this.setRightsDialogVisible = true
        },
        getLeafKeys(node, arr) {
            if(!node.children) {
                return arr.push(node.id)
            }
            node.children.forEach(item => this.getLeafKeys(item, arr))
        },
        setRightsDialogClose() {
            this.defKeys = []
        },
        async allotRights() {
            const keys = [
                ...this.$refs.treeRef.getCheckedKeys(),...this.$refs.treeRef.getHalfCheckedKeys()
            ]
            const idStr = keys.join(',')
            const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`,{ rids: idStr})
            if(res.meta.status !== 200) {
                return this.$message.error('分配权限失败')
            }
            this.$message.success('分配权限成功')
            this.getRolesList()
            this.setRightsDialogVisible = false
        }
    }
}
</script>

<style lang="less" scoped>
.el-tag {
    margin: 7px;
}
.bdtop {
    border-top: 1px solid #eee;
}
.bdbottom {
    border-bottom: 1px solid #eee;
}
.center {
    display: flex;
    align-items: center;
}
</style>